Pressure-regulator.



G. W. ULLIN.

PRESSURE REGULATOR.

APPLICATION FILED JULY 1a, 190s.

NETE@ STATES ll @litiflhl GEORGE WOLVERTON COLLIN. OF BRIDGEPORTCONNECTICUT, ASSIGNOR TO THE SAFETY CAR HEATING AND LIGHTING COMPANY, ACORPORATION OF NEW JERSEY.

PRESSURE-REGULATOR.

Specification of Letters Patent.

Appnation mea July 1a, 1903.

Patented Dec. 7, 1909. serial No. 166,175.

To all whom 'it may concern:

Be it known that l, GEORGE lVoLvERToN COLLIN, a citizen of the UnitedStates, residing at Bridgeport, county of Fairfield, and State ofConnecticut, have invented certain new and useful Improvements inPressure- Regulators, of Iwhich the following is a specification.

My invention relates to gas systems and Q has for one of its objects theprovision of means for regulating the l'low of gas under pressure fromthe storage receptacle or tank to the consuming devices.

nother object is the provision of a pressure regulator such that theflow of gas will be shut off automatically upon the occurrence ofcertain abnormal conditions.

Another object is to provide an automatic pressure regulatorcharacterized 'by creased simplicity and eliiciency.

Other objects will be in part obvious and in part pointed outhereinafter'.

The invention accordingly consists in the features of construction,combinations` of elements and arrangement of parts which will beexemplified in the apparatus hereinafter described, and the scope of theapplication of which will be indicated in the following claims.

Referring now to the drawings. wherein is illustrated one of the variouspossible embodimentsy of my invention, Figure l is a transversesectional view of the same. Fig. 2 is a plan View of the spring tensiondevice.

Similar reference characters refer to similar parts throughout theseveral views of the drawings.

Preliminary to a description of the speciic features of my invention andas conducive to a clearer understanding of certain objects thereof, itmay here be noted that, in gas systems, 1t 1s essential that means beprovided for regulating the iow of the gas fromthe containing reservoiror tank to the consuming devices in order tof insure a substantiallyeven pressure in the system. therefore, found it desirable to provide aregulator capable of regulating the pressure automatically andmyinvention being particularly adapted for use in railway cars or similar'structures, I have provided means such that accurate results may beobtained,

notwithstanding the jarring incident to the motion of the car. The aboveand other ad- I have,

vantages are secured in constructions of the nature of that hereinafterdescribed.

Referring now to the.drawings, o indicates the casing of the pressureregulator formed in two parts, as shown, and within which is located thevalve support or bracket- Z). Suitably secured between the sections ofcasing a and forming a partition therebetween is a diaphragm, or othercontrolling device, c of suitable material adapted to be influenced bypressure and which is connected with the means for regulating the supplyof The valve support oi' bracket is provided with a gas-way dhaving-valve seats e and f at opposite ends thereof. The valve supportor bracket is recessed at one side, as at g, to form a valve chamber,and at the opposite side is provided with an integral screw-threadedmember lz, into which a gas-conducting bushing is threadedly secured.Bushing 'i is` preferably provided with longitudinally extending groovesj, which provides passage-ways for the gas.

Located within valve chamber 5'/ and bushing z' are valves and Zrespectively, suitably connected to move in unison by means of rod 0passing through gas-way l which connects the valve seats c and Leadingfrom valve chamber g and communicating with the regulating chamber g isa gas-way p.

Pivotally mounted upon the lug or projection r extending from valvesupport b is a bell-crank lever s provided with an aperture taperingoutwardly in either direction from its interior portion and throughwhich a valve operating stem t extends from valve la, which, at itsouter end, as herein shown, terminates in a ball or enlargement so as topermit the rocking of the bell-crank lever s about valve stem t. lever sis connected by a link c and a hook or fastening to to diaphragm c, andat its opposite end is connected by means of a shackle 1 to a cross bar2,. to each end of which retractile springs 3 are connected, theopposite ends of which are connected to the bridle bar 4 swiveled uponan adjusting screw 5 threaded into the wall of casing a and preferablyprovided with a lock nut 6 One end of bell-crank to hold the same in theadjusted position.

ISO

phragm c, to which access may be had through an opening .e in coversection y and casing a, should it be desired to raise the diaphraom forany purpose.

Having thus described my invention,'1ts operation, which should belargely obvious from the above description, is substantially as follows:With the several cooperativeparts in their normal positions, thepressure of on the regulator diaphragm will be such as to maintainvalves /s and Z away from their respective seats to allow a normal flowof gas to take place. Upon an increase of pressure, however, diaphragm cwill be flexed upwardly and, through the connecting means, will drawvalve Z closer to its seat to cut down the flow of was, and,accordingly, the pressure in the regulating chamber, it, of course,being understood that gas enters bushing t' flowing in the direction ofthe arrow, as shown in lfig. l; A diminution of pressure will cause anopposite flexure of diaphragm o and a movement of the valves in anopposite direction. ln case of a breakage in the consuming devices orpressure of the regulator, or upon the occurrence of any other abnormalcondition, the upward or downward movement Vof the diaphragm under theincreased or diminished pressure will operate to seat valve Z or Z2 inits respective seat, entirely shutting off the flow of gas. At thisaoint, it may be noted that, in the event of1 the breakage of thediaphragm or of a pipe on the low pressure side of the valve, thetension of the dia' phragm upon the bell-crank. lever s will berelieved. This tendency is provided for, however, by the provision ofsprings 3, which, through their connection with bell crank levers','will seat valve Z in its seat, shutting olf thereby the llow of gasto the consuming devices; Adjusting screw operates to determine throughbell-crank lever 8 and link 'v the relative amount of flexure in eitherdirection of diaphragm o under varying pressures. 1twill, accordingly,be

seen that I have provided a pressure .regulator of novel constructionwell adapted to achieve the objects of my invention and which, moreover,is characterized by accuracy of operation, the springcontrolling meansbeing uninfluenced by jarring of the car, insuring a stable operativeapparatus.

While I have described and shown my invention in the above relation, itis, of course, obvious that l am not limited to such einployment, asmany of its features are capable of use in a variety of other relationsin other structures.

Aismany changes could be made in the above construction and manyapparentlyl widely diernt embodiments of my invention could be madewithout departing from the scope thereof, l intend that all mattercontained in the above description or shown in the accompanying drawingsshall be interpreted as illustrative and not in a limiting sense. f l

llaving described my invention what I claim and desire to secure byLetters Patent is:

l. ln a regulator, in combination, a pressure chamber having a gas inletopening, a flexible diaphragm forming one of the walls of said pressurechamber, a valve located within said gas inlet opening and adapted tocut olf the flow of 'gas therethrough, a bell crank ylever pivotallymounted at a point intermediate its ends within said pressure chamber,one of the legs of said lever inter.- inediate its ends heilig connectedwith said valve, a link connecting the other leg of said bell cranklever with said diaphragm, a pair of coil springs connected with the endof said first mentioned leg of the bell crank lever, and an adjustingscrew accessible from a position exteriorly of said chamber havin fr aswivel connection with said springs.

2. 'in a regulator, in combination, a pressure chamber having a gasinlet openino a v flexible diaphragm formed in one of the walls of saidpressure chamber, means having two oppositely disposed valve faceslocated within said gas inlet opening and adapted to cut off the flow ofgas therethrough by movement in either direction, a bell crank leverpivotally mounted within said pressure chamber, one leg of said leverintermediate its ends being connected with said means, a link connectingthe other leg of said bell crank lever with said diaphragm, a pair ofcoil springs connected with the end of the first mentioned leg andpositioned upon either side Iof said link and an adjusting screwoperative from Ya position eXteriorly of said chamber connected withsaid springs. l

3. ln a regulator, in combination, a pressure chamber, a valve chestcomprising piston chambers connected by a reduced passage, the ends ofsaid passage forming valve seats, a valve piston having oppositelydisposed faces adapted to engage said seats, an axially alined inlet toone of said chambers, a laterally extending outlet from the other ofsaid chambers and means in said pressure chamber adapted to control theoperation of said valve.

GERGE WOLVER'ION COLLIN.

W'itnesses ELMER E. ALLBEE, GEO, E. MORSE.

